@mixin high-contrast-button-outline($outline: 2px dotted) {
  @media (-ms-high-contrast: active) {
    outline: $outline;
  }
}

@mixin button-base {
  $min-height: control-height();
  $vertical-padding: ($min-height - line-height(body) - rem(2px)) / 2;

  @include recolor-icon(color('ink', 'lighter'));
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: $min-height;
  min-width: $min-height;
  margin: 0;
  padding: $vertical-padding spacing();
  background: linear-gradient(
    to bottom,
    color('white'),
    color('sky', 'lighter')
  );
  border: border(dark);
  box-shadow: shadow(faint);
  border-radius: border-radius();
  line-height: 1;
  color: color('ink');
  text-align: center;
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  transition-property: background, border, box-shadow;
  transition-duration: var(--p-override-none, duration());
  transition-timing-function: var(--p-override-none, easing());
  -webkit-tap-highlight-color: transparent;

  &:hover {
    background: linear-gradient(
      to bottom,
      color('sky', 'lighter'),
      color('sky', 'light')
    );
    border-color: color('sky', 'dark');
  }

  &:focus {
    border-color: color('indigo');
    outline: 0;
    box-shadow: 0 0 0 1px color('indigo');

    @include high-contrast-button-outline;
  }

  &:active {
    // Same color gradient is necessary for background transitions
    background: linear-gradient(
      to bottom,
      color('sky', 'light'),
      color('sky', 'light')
    );
    border-color: color('sky', 'dark');
    box-shadow: 0 0 0 0 transparent,
      inset 0 1px 1px 0 rgba(color('ink', 'lighter'), 0.1),
      inset 0 1px 4px 0 rgba(color('ink', 'lighter'), 0.2);
  }

  &.newDesignLanguage {
    @include recolor-icon(var(--p-icon));
    @include focus-ring;
    background: var(--p-action-secondary);
    border: none;
    box-shadow: none;
    border-radius: var(--p-border-radius-base);
    color: var(--p-text);

    &:hover {
      background: var(--p-action-secondary-hovered);
      border-color: transparent;
      @include high-contrast-outline;
    }

    &:focus {
      border-color: transparent;
      box-shadow: none;
      @include focus-ring($style: 'focused');
    }

    &:active {
      background: var(--p-action-secondary-pressed);
      border-color: transparent;
      box-shadow: none;

      &::after {
        border: none;
        box-shadow: none;
      }
    }

    &.pressed {
      background: var(--p-action-secondary-depressed);
      box-shadow: none;
      color: var(--p-text-on-interactive);
    }

    @media (-ms-high-contrast: active) {
      border: 1px solid ms-high-contrast-color('text');
    }
  }
}

@mixin base-button-disabled {
  @include recolor-icon(color('ink', 'lightest'));
  transition: none;
  background: linear-gradient(
    to bottom,
    color('sky', 'light'),
    color('sky', 'light')
  );
  color: color('ink', 'lightest');

  &.newDesignLanguage {
    @include recolor-icon(var(--p-icon-disabled));
    background: var(--p-action-secondary-disabled);
    color: var(--p-text-disabled);
  }
}

@mixin button-filled($button-color, $focus-color, $outline-color: null) {
  $border-color: darken($button-color, 10%);
  $active-color: darken($button-color, 15%);
  background: linear-gradient(
    to bottom,
    lighten($button-color, 2%),
    darken($button-color, 2%)
  );
  border-color: $border-color;
  box-shadow: inset 0 1px 0 0 lighten($button-color, 3%), shadow(faint),
    0 0 0 0 transparent;
  color: color('white');

  &:hover {
    background: linear-gradient(
      to bottom,
      $button-color,
      darken($button-color, 5%)
    );
    border-color: $border-color;
    color: color('white');
    text-decoration: none;
  }

  &:focus {
    border-color: $focus-color;
    box-shadow: inset 0 1px 0 0 lighten($button-color, 5%), shadow(faint),
      0 0 0 1px $focus-color;
  }

  &:active {
    background: linear-gradient(to bottom, $border-color, $border-color);
    border-color: $active-color;
    box-shadow: inset 0 0 0 0 transparent, shadow(faint),
      0 0 1px 0 $active-color;
  }

  &.newDesignLanguage {
    background: var(--p-button-color);
    border-color: transparent;
    box-shadow: none;
    color: var(--p-button-text);

    &:hover {
      background: var(--p-button-color-hover);
      border-color: transparent;
      color: var(--p-button-text);
    }

    &:focus {
      border-color: transparent;
      box-shadow: none;
    }

    &:active {
      background: var(--p-button-color-active);
      border-color: transparent;
      box-shadow: none;
    }

    &.pressed {
      background: var(--p-button-color-depressed);
      border-color: transparent;
      box-shadow: none;

      &:hover,
      &:focus {
        background: var(--p-button-color-depressed);
        border-color: transparent;
        box-shadow: none;
      }
    }
  }
}

@mixin button-filled-disabled($button-color) {
  @include recolor-icon(color('white'));
  // Transition gradient to gradient to avoid flicker
  background: linear-gradient(
    to bottom,
    lighten($button-color, 25%),
    lighten($button-color, 25%)
  );
  border-color: lighten($button-color, 20%);
  box-shadow: none;
  color: color('white');

  &.newDesignLanguage {
    @include recolor-icon(var(--p-icon-disabled));
    border-color: transparent;
    background: var(--p-action-secondary-disabled);
    color: var(--p-text-disabled);
  }
}

@mixin button-outline($outline-color, $background-color: transparent) {
  background: $background-color;
  border-color: rgba($outline-color, 0.4);
  box-shadow: none;
  color: darken($outline-color, 20%);
  @include recolor-icon(darken($outline-color, 20%));

  &:hover {
    background: rgba($outline-color, 0.05);
    border-color: rgba($outline-color, 0.4);
  }

  &:focus {
    border-color: rgba($outline-color, 0.8);
    box-shadow: 0 0 0 1px rgba($outline-color, 0.8);
  }

  &:active {
    background: rgba($outline-color, 0.1);
    box-shadow: none;
  }

  &.newDesignLanguage {
    background: transparent;
    @include focus-ring($border-width: border-width('base'));
    box-shadow: 0 0 0 border-width('base') var(--p-border);
    color: var(--p-text);

    &:hover {
      box-shadow: 0 0 0 border-width('base') var(--p-border);
      background: var(--p-surface-hovered);
    }

    &:focus {
      box-shadow: 0 0 0 border-width('base') var(--p-border);
      @include focus-ring($style: 'focused');
    }

    &:active {
      box-shadow: 0 0 0 border-width('base') var(--p-border);
      background: var(--p-surface-pressed);
      &::after {
        box-shadow: none;
      }
    }

    &.pressed {
      background: var(--p-surface-depressed);
      box-shadow: 0 0 0 border-width('base') var(--p-border);
      color: var(--p-text-on-interactive);
    }

    &.disabled {
      box-shadow: 0 0 0 border-width('base') var(--p-border-disabled);
      background: transparent;
      color: var(--p-text-disabled);
    }

    &.destructive {
      background: transparent;
      box-shadow: 0 0 0 border-width('base') var(--p-border-critical);
      color: var(--p-interactive-critical);
      @include recolor-icon(var(--p-icon-critical));

      &:hover {
        box-shadow: 0 0 0 border-width('base') var(--p-border-critical);
        background: var(--p-surface-critical-subdued);
      }

      &:focus {
        box-shadow: 0 0 0 border-width('base') var(--p-border-critical);
        @include focus-ring($style: 'focused');
      }

      &:active {
        box-shadow: 0 0 0 border-width('base') var(--p-border-critical);
        background: var(--p-surface-critical-subdued);
      }

      // stylelint-disable-next-line selector-max-class
      &.disabled {
        box-shadow: 0 0 0 border-width('base') var(--p-border-critical-disabled);
        background: transparent;
        color: var(--p-interactive-critical-disabled);
      }

      // stylelint-disable-next-line selector-max-class
      &.pressed {
        background: var(--p-surface-critical-subdued);
        box-shadow: 0 0 0 border-width('base') var(--p-border-critical);
        color: var(--p-interactive-critical);
      }
    }
  }
}

@mixin button-outline-disabled($outline-color) {
  background: transparent;
  border-color: rgba($outline-color, 0.25);
  box-shadow: none;
  color: color('ink', 'lightest');

  @include recolor-icon(color('ink', 'lightest'));
}

@mixin button-full-width {
  display: flex;
  width: 100%;
}

@function plain-button-background() {
  @return rgba(color('ink'), 0.1);
}

@mixin plain-button-backdrop($background-color: plain-button-background()) {
  padding: 2px 5px;
  margin: -2px -5px;
  background: $background-color;
  border-radius: border-radius();
  transition: opacity duration() easing();
}

@mixin unstyled-button() {
  appearance: none;
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  font-size: inherit;
  line-height: inherit;
  cursor: pointer;

  &:focus {
    outline: none;
  }
}